/* flex布局 */
.f {
  display: flex;
}
.f-col {
  flex-direction: column;
}
.f-ac {
  align-items: center;
}
.f-al {
  align-items: left;
}
.f-ar {
  align-items: right;
}
.f-jc {
  justify-content: center;
}
.f-js {
  justify-content: flex-start;
}
.f-je {
  justify-content: flex-end;
}
.f-jl {
  justify-content: left;
}
.f-jr {
  justify-content: right;
}
.f-ja {
  justify-content: space-around;
}
.f-jb {
  justify-content: space-between;
}
.f-w {
  flex-wrap: wrap;
}
.f-1 {
  flex: 1;
}
.f-2 {
  flex: 2;
}
.f-3 {
  flex: 3;
}
.f-4 {
  flex: 4;
}
.f-5 {
  flex: 5;
}
.f-6 {
  flex: 6;
}
.f-7 {
  flex: 7;
}
.f-8 {
  flex: 8;
}
.f-9 {
  flex: 9;
}
/* 外边距 顶部 */
.mt-10 {
  margin-top: 10px;
}
.mt-20 {
  margin-top: 20px;
}
.mt-30 {
  margin-top: 30px;
}
.mt-40 {
  margin-top: 40px;
}
.mt-50 {
  margin-top: 50px;
}
.mt-60 {
  margin-top: 60px;
}
.mt-70 {
  margin-top: 70px;
}
/* 外边距 底部 */
.mb-10 {
  margin-bottom: 10px;
}
.mb-20 {
  margin-bottom: 20px;
}
.mb-30 {
  margin-bottom: 30px;
}
.mb-40 {
  margin-bottom: 40px;
}
.mb-50 {
  margin-bottom: 50px;
}
.mb-60 {
  margin-bottom: 60px;
}
.mb-70 {
  margin-bottom: 70px;
}
.line-1 {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.line-2 {
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.line-3 {
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}
.line-4 {
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
}
.line-10 {
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 10;
  }
/* 文字链接样式 */
.link:hover {
  cursor: pointer;
  user-select: none;
  color: #fff;
}
.link:active {
  color: #e0e0e0;
}

.containers {
  width: 1200px;
  margin: 0 auto;
}
.box-shadow {
  box-shadow: 0px 0px 10px 0px #D9D9D94D;
}
.pd-10 {
  padding: 10px;
}
.pd-20 {
  padding: 20px;
}
.pd-30 {
  padding: 30px;
}
.pd-40 {
  padding: 40px;
}
.pd-50 {
  padding: 50px;
}